sbw1
Well-Known Member
- Oct 10, 2006
- 8,190
- Boat Info
- This is listed in my signature
- Engines
- This is listed in my signature
Don't get hung up on fuel burn rates unless there is a huge difference. I was at a Crusader Engine Clinic a few years ago and the instructor made the observation that there is variation among engines of the same model. I think he said HP for example could vary by 5-7% for a given engine model due to manufacturing methods and the engine is still considered to be in spec. Couple this with running conditions being so variable, and gennys running off one tank, cross over valves for some configurations or not and you soon realize the issue is not worth fretting over. I run my boats sometimes 7-8 hours at a time over many miles. I used to be somewhat surprised when the fuel requirements for each tank were within 4 or 5 gallons at the end of a run. Many times there were differences of 20 gallons if sea conditions were rough. With the current boat, fuel usage differences are invisible as both engines and the genny draw from one large fiberglass tank. I've come to realize that it is change that you need to pay attention to. If you are suddenly using much more fuel, or suddenly hearing something different with your equipment, you need to pay particular attention. Otherwise, just do your maintenance as scheduled and enjoy the ride.